<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="buttom-list">
                    <div class="buttom-wrapper">
                        <div class="button">{{ this.currentCity }}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="buttom-list">
                    <div class="buttom-wrapper" 
                    v-for="item of hot" 
                    :key="item.id"
                    @click="handleCityClick(item.name)"
                    >
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list">
                    <div class="item border-bottom" 
                    v-for="innerItem of item" 
                    :key="innerItem.id"
                    @click="handleCityClick(innerItem.name)"
                    >
                        {{innerItem.name}}
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
    nama: 'CityList',
    props: {
        hot: Array,
        cities: Object,
        letter: String
    },
    computed:{
        ...mapState({
            currentCity: 'city'
        })
    },
    methods: {
        handleCityClick (city){
            // this.$store.commit('changeCity',city)
            this.changeCity(city)
            this.$router.push('/')
            // alert(city)
        },
        ...mapMutations(['changeCity'])
    },
    watch: {
        letter (){
            if(this.letter){
                const element=this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    },
    mounted() {
        this.scroll = new Bscroll(this.$refs.wrapper)
    }
}
</script>

<style lang="stylus" scoped>
    @import '../../../assets/styles/varibles.styl'
    .border-topbottom
        &:before
            border-color: #ccc
        &:after
            border-color: #ccc
    .border-bottom
        &:before
            border-color: #ccc
    .list
        overflow: hidden
        position absolute
        top:1.68rem
        left: 0
        right: 0
        bottom: 0
        // background: red
        .title
            background: #eee
            line-height: .54rem
            padding-left: .2rem
            color: #666
            font-size: .26rem
        .buttom-list  
            padding:.1rem
            overflow: hidden
            .buttom-wrapper
                float: left
                width:33.33%
                .button
                    margin: .1rem
                    padding:.1rem 0
                    text-align: center
                    border: .02rem solid #ccc
                    border-radius: .06rem

</style>